CVE-2026-34003
Xorg: xwayland: x.org x server: information exposure and denial of service via out-of-bounds memory access
Description
A flaw was found in the X.Org X server's XKB key types request validation. A local attacker could send a specially crafted request to the X server, leading to an out-of-bounds memory access vulnerability. This could result in the disclosure of sensitive information or cause the server to crash, leading to a Denial of Service (DoS). In certain configurations, higher impact outcomes may be possible.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:LAttack VectorLocal
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
Red Hat Inc.
commercial·USaka Red Hat
АО «ИВК»
commercial·RUaka ivk
X.Org Foundation
oss-project·USaka libx11, xorg-server, xlib
Сообщество свободного программного обеспечения
oss-projectaka fsf
and 12 more affected products View all →
Exploitability
Official Patch Available
Workaround Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
1 technique Collection
References
https://lists.x.org/archives/xorg-announce/2026-April/003679.html
lists.x.org
https://lists.x.org/archives/xorg-announce/2026-April/003678.html
lists.x.org
https://opennet.ru/opennews/art.shtml?num=65210
opennet.ru
and 40 more references View all →
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